Metal Core Resource Center

SuperWhite LED Soldermask


  Current Resin System   Desired Resin System
  Focus: initial thermal shock, not constant heat   Remains white through assembly and lifespan
  Tend to brown over time   High reflectivity to enhance performance
  Not developed as LED reflecting surface   Result: lower power consumption


Solution: White Hot Temperature LED Soldermask

During the past two years a number of LED white soldermasks have been introduced. Unfortunately, we didn't see much of an improvement.

As a result, we innovated our own solutions and identified two offerings demonstrating significant improvements.

Achieving SuperWhite Soldermask While Resisting Browning

One way to achieve a "SuperWhite" soldermask that resists browning is to apply a second coat of thermal cured white soldermask over the LPI.

However, this can cause a concern that the second coat may impede the thermal dynamics of the PCB surface.

Based on the thermal images below comparing a single coat of LPI to a board with a secondary coat, we can see that this is a non-issue.

About Us

Domestic PCB Fabricator

Bare printed circuit board manufacturer (NAICS: 334412)
Romulus, MI (since 1985)
(734) 941-8100

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